Warp beam flange



` N. E. MARTIN WAP BEAM FLANGE im@ 3Q? 3936.

Filed May l, 1935 ATTORNEYS Patented June 30, 1936 PATENT OFFIQE WARPBEAM FLAN GE Newton 'E. Martin, Leola, Pa.

Application May 1,

4 Claims.

This invention relates to improvements inwarp beam flanges and moreparticularly to improvements in locking devices for securing warp beamiianges to warp beams in various positions.

An object o-f the present invention is to provide new, simple andefficient devices for locking warp beam flanges to warp beams.

Another object of the invention is to provide nove-l locking devices forthe purpose before stated, so constructed that the locking pressure isapplied through leverage arrangements Whereby the effective pressure issubstantially multiplied. i Y

In carrying out the foregoing and otherrobjects of the invention, a warpbeam is provided with externally threaded sleeves .at the ends thereof,onV which are mounted warp beam flanges, the hubs of which areinternally threaded to engage the sleeves. A part of the hub of eachange is cut away to provide a. slide- Way or pocket'in which ts alocking member in the nature of a brake-shoe, which member is providedwith ridges on one surface corresponding to the pitch and dimensions ofthe sleeve threads. In order that this shoe can be pressed into suchcontact with the sleeve as to effectively lock the flange againstrotation about the beam, use is made of leverage mechanism. In the formshown a cross bar on the flange has depending therefrom near one endthereof, a wedgeshaped extension which serves'as a fulcrum for a lever.A pressure screw is threaded through the bar near the opposite endthereof to engage the end of the lever remote from the fulcrum point.The lever itselfvis provided with a 'clepending stud, the end of whichis rounded to engage the outer surface of the brake-shoe in such fashionas to constitute a stud-and-groove joint. When pressure is applied tothe pressure screw, the lever, due to the fulcrum arrangement, in turncommunicates this pressure to the brake-shoe with the result that thepressure is so multiplied as to lock the brake-shoe securely to thesleeve, and in turn to thereby lock the entire ange to the sleeveagainst rotation.

Other features, objects and advantages of the invention will becomeapparent by reference to the following detailed description of theaccompanying drawing, wherein Fig. 1 is a side elevation of a part of awarp beam showing flanges secured thereto by means of an embodiment ofthe invention.

Fig. 2 is an enlarged fragmentary end view taken substantially on theline 22 of Fig. l; and

1935, Serial No. 19,182

Fig. 3 is a section taken substantially on the line 3 3 of Fig. 2.

Referring now to the drawing, EE indicates a Warp beam of conventionalcharacter, such beam being' made preferably, but not necessarily, ofWood, or some other suitable material. Fitting over end portions ofreduced diameter of the beam I are sleeves which are preferably made ofsome suitable metal. The peripheries of these sleeves are threaded asindicated at i2. The driving connections for rotating the beam l0 arenot shown herein, since any suitable arrangement, many of which arewell-known in the art, can be used. v

The'flanges associated with the warp beam I are indicated generally atI4, such flanges being so constructed as to present fiat surfaces I5 exetending transversely of the beam.

Referring now particularly to Figs. 2 and 3, it will be seen that theflange I4 is provided with a hub I6 internally threaded as at Il toengage the threads I2 of a sleeve A part of the hub I6 behind thesurface i5 is cut away as at I8 and the hub is provided with upturnedextensions |9 which serve to provide an inclined guideway or pocket forthe reception of a brakeshoe 20. This brake-shoe 26 has the lowersurface thereof rounded to conform to the periphery of the sleeve I I,and this lower surface is provided w-ithcross ridges 2| so shaped anddimen- 'sioned as to cause the ridges to fit in the threads |2 of asleeve I I.

'I'herflange is provided with spoke-like reenforcing members between twoof which extends a bar 26 which is preferably, but not necessarilyyformed integrally with the spoke-'like members 25. Depending from thebar 26 near one end thereof is a wedge-shaped extension 21 which servesas a fulcrum for a lever 28, such lever being provided with a depression29 to receive the. fulcrum. Near the other end of the bar 26 is found anenlarged boss 3D centrally apertured and threaded for the reception of apressure screw 3|. The lever 28 has a depression 32 in the upper surfacethereof into which the rounded end of pressure screw 3| fits. Extendingdownwardly from the bottom surface of the lever 28 is a stud 34, thelower end of which is rounded as shown to contact with the top of thebrake-shoe 20. The

top surface of the brake-shoe 28 has a part thereof somewhat rounded orout away to form a substantially arcuate shaped groove as indicated bythe dotted lines so that the stud 34 is in contact with the brake-shoein what may be called a stud-and-groove joint.

The use and operation of the invention are substantially as follows:With a flange in threadedV engagement with a sleeve on the warp beam,the Vpositioning of thel flange longitudinally of the beam can beaccomplished so long as the brakeshoe is not pressed against the sleevewith locking force. The shoeY follows the iia-nge in its rotation due tothe Vprovision of ridges on the curved surface thereof and due to itsbeing located in the inclined slideway or pocket. When either one orboth of the. flanges have'been moved nso that they are spaced apart thedesired distance, the ange or'ilanges may be locked securely againstrotation relative to the warp beam by turning the respec-` tive pressurescrews 3i to apply a force to the levers.y Since the levers 23 arefulcrumed near their ends, the pressure. applied by the pressure screwsis communicated to the brake-sho`es and is multiplied. The result isthat the brake-shoes are forced intorcontact with the sleeves with agreater pressure than can b-e obtained by a single pressure screw actingdirectly on a shoe.

In practice it has been found that the degree of pressure can be variedby varying the position of the fulcrum member 21 relative to the lever23. In other wordsthe multiplication of pressure'can be increased byhaving thisfulcrum so positioned as to be as close as possible to oneend of thelever, or can be decreased byv having the fulcrum sopositioned as to be nearer the center of the lever. An eicientarrangement for locking the shoeV in place with sufficient pressure hasbeen shown.

From theV foregoing it will be seen that the present invention providesa novel Ylocking 1arrangement forV so securing a warp beam ang'e to awarp beam that for all practical purposes movement of the flangerelative to the vbeam is eliminated. While the guideway or pockety forthe brake-shoe has been illustrated as being tapered, it will beunderstood, of course, that the side walls of this guideway may bearrangedin parallelism, or in any other-'suitable arrangement to receivesquare, rectangular,vr 0r` cylindrical brake-shoes. 1t will beunderstood that modifi# cations `of the invention areV contemplated, inview of which, any limitations imposedl thereupon are to be such only asare set forth in the following claims. liclaim: Y Y. li' i 1. Thecombination with a warp beam having a peripherally threaded end portion,of` a flange therefonthe hubl of said flange being internally threadedfor engagement with the beam threads, a guideway in said hub, abrake-shoe; tting in said' guideway and engaging said beam threads,

a guideway in said hub, a brake-shoe fitting inV said guideway andengaging said beam threads,

.a fulcrum member on said ange and spaced vfrom said brake shoe, a leverhaving one end por.-

tion engaging said fulcrum member, a stud `ex` Itending from said leverinto engagement with said e shoe, and means for applyingY pressure tothe other endportion of said lever to force saidY shoe into lockingengagement with said beam.

3. The combination with a Warp beam having a peripherally threaded endportion, of a flange therefor, the'hub of said ange Vbeing internallyCII from said shoe, said cros's'bar being provided with Y a` dependingfulcrum portion, a lever in engagement withsaid fulcrum portion andhavinga contactstuden'gaging saidY shoe, and a pressure screw threadedthrough said'rbarV to engage the end of said lever vopposite thefulcrumV point to force saidpshoe intolocking engagement;Y with 45: Thevcombination withY a, Warp beam having aperi'pherally, threadedendportion, of a flange therefon;'theV hubvofsaid flange beinginternally thread'edfor engagement withk the beam threads, aguideway insaid rhub a'brakeeshoe'tting in said guideway and/engaging said beamthreads,

said 'brake' shoe :having al substantially arcuate` havinga stud fittingin said arcuate shaped groove finf the) top, of said s hoe,fand aVpressure 'screw threadedthrough said bar for engaging the end of 'saidlever opposite the fulcrum point to' force said `shoe beam.A Y

NEWTON E. MARTIN.

in to locking 'engagement Ywith said e

